CN108591256B - Permanent-magnet bearing with damping function - Google Patents
Permanent-magnet bearing with damping function Download PDFInfo
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- CN108591256B CN108591256B CN201810282571.7A CN201810282571A CN108591256B CN 108591256 B CN108591256 B CN 108591256B CN 201810282571 A CN201810282571 A CN 201810282571A CN 108591256 B CN108591256 B CN 108591256B
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- Prior art keywords
- magnet
- permanent magnet
- permanent
- damping
- ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/026—Springs wound- or coil-like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention particularly relates to a kind of Permanent-magnet bearings with damping function, including shell, bearing block, magnet ring seat, thin squirrel-cage bar and thick squirrel-cage bar, bearing is provided in bearing block, bearing is fixedly connected with shaft, magnet ring cover for seat is located on bearing block, fixing sleeve is equipped with the inner ring permanent magnet with shaft coaxial line on bearing block, outer ring permanent magnet is fixedly installed in magnet ring seat, inner ring permanent magnet and the equal axial charging of outer ring permanent magnet and magnetizing direction is identical, there are two inner ring permanent magnets and the corresponding setting from top to bottom of outer ring permanent magnet, damping circular ring plate is fixed between two inner ring permanent magnets, there is gapped magnetic field between two outer ring permanent magnets, the edge of damping circular ring plate is located in gapped magnetic field；The both ends of thin squirrel-cage bar are fixedly connected with shell and magnet ring seat respectively, the both ends of thick squirrel-cage bar are fixedly connected with shell and bearing block respectively, setting has elastic component between magnet ring seat and shell, and the elastic force direction of elastic element is consistent with the repulsion direction of inner ring permanent magnet and outer ring permanent magnet.
Description
Technical field
The invention belongs to bearing supporting technology field more particularly to a kind of Permanent-magnet bearings with damping function.
Background technique
Currently, in order to ensure shafting can operate with security and stability, in the various high speeds such as centrifuge, turbine, accumulated energy flywheel
In vertical rotating machinery, bearing and vibration damping, such as patent document are often carried out to system using squeeze film damper in the rotor
A kind of Permanent-magnet bearing squeeze film damper involved in 201310151715.2, but the shortcoming of this damper is: 1)
The rigidity of damper and damped coefficient and show very strong nonlinear characteristic with the increase of rotor eccentricity rate, this strong non-
Linear characteristic can cause the problems such as bistable state response and low frequency precession of rotor-support-foundation system, so that rotor-bearing arrangement be made to be damaged
It is bad；2) environment is unfriendly, and the lubricating oil of intense oscillations comes difficult to the maintenance of workplace, cleaning tape in work.
Summary of the invention
For the disagreeableness lubricating oil of solution squeeze film damper use environment of the existing technology and rigidity and damping
There is the problem of very strong nonlinear characteristic, the present invention provides a kind of Permanent-magnet bearing with damping function, changes magnetic using being located at
The induced current fever that conductor in generates is damped, and conventional extruded film damper rigidity and damping are not only improved
Strong nonlinearity feature, and working environment is friendly.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows, a kind of permanent magnetism axis with damping function
It holds, including shell, bearing block, magnet ring seat, thin squirrel-cage bar and thick squirrel-cage bar, is provided with bearing, the bearing in the bearing block
It is fixedly connected with shaft, the magnet ring cover for seat is located on bearing block, and fixing sleeve is equipped with and shaft coaxial line on the bearing block
Inner ring permanent magnet is fixedly installed the outer ring permanent magnet opposite with inner ring permanent magnet, the inner ring permanent magnet in the magnet ring seat
It is identical with the equal axial charging of outer ring permanent magnet and magnetizing direction, the inner ring permanent magnet and outer ring permanent magnet accordingly from up to
Two are arranged with, damping circular ring plate is fixed between two inner ring permanent magnets, is had between two outer ring permanent magnets
There is gapped magnetic field, the edge of the damping circular ring plate is located in gapped magnetic field, the edge and gapped magnetic field of the damping circular ring plate
Overlapping area size with damping circular ring plate side-to-side vibrations and change；
The top of the thin squirrel-cage bar is fixedly connected with the casing, and bottom end is fixedly connected with magnet ring seat, the thick squirrel-cage bar
Top be fixedly connected with the casing, bottom end is fixedly connected with the bearing seat, and flexible member is arranged between the magnet ring seat and shell
The elastic force direction of part, the elastic element is consistent with the repulsion direction of inner ring permanent magnet and outer ring permanent magnet.
Preferably, the distance between the distance between two described inner ring permanent magnets and two outer ring permanent magnets phase
It is made Deng, the damping circular ring plate of exhausted nonmagnetic electrically conductive material, the radial direction of the damping circular ring plate has step, in-between thickness
Degree is greater than the thickness at edge, and the centre of the damping circular ring plate is fixed between two inner ring permanent magnets, the damping circle
Gap is all had between the edge of ring plate and two outer ring permanent magnets.The distance between two described inner ring permanent magnets and two
The distance between a outer ring permanent magnet is equal, improves the stability that inner ring permanent magnet and outer ring permanent magnet repel each other, damping circle
The radial direction of ring plate has step, fixes it easy, and play buffer action to two inner ring permanent magnets, improves the steady of structure
It is qualitative.
Preferably, being equidistant between the inner ring permanent magnet and outer ring permanent magnet.Improve inner ring permanent magnet and outer ring
The stability that permanent magnet repels each other improves the stability of structure.
Preferably, the inner ring permanent magnet and outer ring permanent magnet are all made of rare earth permanent-magnetic material and are made.Such as use rare earth
Magnetic strong Nd-Fe-B material is made in permanent magnetism material, and trade mark N40, the part can be customized in specialized factory, because of inner ring in work
Permanent magnet and outer ring permanent magnet are only swung without rotation, therefore use integral ring-shaped structure, enhance inner ring permanent magnet and outer ring permanent magnetism
The magnetism of body and the stability repelled each other, improve the effect of vibration damping of the present invention, improve the stability that the present invention supports.
Further, the elastic element selects helical spring, offers the first spring cavity, the magnet ring in the shell
Second spring chamber is offered on seat, the both ends of the helical spring bear against intracavitary in the first spring cavity and second spring.Spiral shell
Rotation spring can directly from market, purchase be obtained, and cost is relatively low, and the mounting structure of helical spring is simple and reliable.
Further, the quantity of the elastic element is four, circumferencial direction of four elastic elements along magnet ring seat
It is uniformly distributed.The quantity of elastic element is not limited to four, but must be greater than three, circumference of four elastic elements along magnet ring seat
Direction is uniformly distributed, and improves damping efficiency, stable structure, cost is relatively low.
Further, the thin squirrel-cage bar is provided with four and is uniformly distributed along the circumferencial direction of magnet ring seat, the thick mouse
Cage item is provided with four and is uniformly distributed along the circumferencial direction of bearing block.The quantity of thin squirrel-cage bar and thick squirrel-cage bar is not limited to
Four, but three must be all larger than, quantity is selected as four, and stable structure, cost is relatively low.
Further, the thin squirrel-cage bar and thick squirrel-cage bar are made of stainless steel material.Select elasticity preferable stainless
Swing is passed to thin squirrel-cage bar and thick mouse cage respectively when swinging by Steel material, bearing block and magnet ring seat, the stainless steel that elasticity is good
Material is unlikely to deform or fractures, and improves effectiveness in vibration suppression of the invention and prolongs the service life.
Further, the top of the magnet ring seat offers annular installing port, is detachably arranged in the annular installing port
There is annulus cover board.Facilitate the assembly of outer ring permanent magnet, it is simple and reliable for structure, shorten assembly time, reduces cost.
Further, the magnet ring seat, annulus cover board and bearing block are made of permeability magnetic material.As permeability magnetic material uses 45
Number steel plays the role of guiding the magnetic line of force, and cost is relatively low, stable and reliable for performance, facilitates processing and manufacturing.
The utility model has the advantages that
(1) shaft of the Permanent-magnet bearing of the invention with damping function, turns
Axis amplitude increases, and swings inner ring permanent magnet disalignment, causes between inner ring permanent magnet and outer ring permanent magnet air gap not equal
Cloth, the small place of air gap will receive a repulsion, and outer ring permanent magnet is pushed to swing, and then compress the spiral bullet in direction
Spring, helical spring can give one counter-force of magnet ring seat, force magnet ring seat and outer ring permanent magnet to move in the opposite direction, this is one
Mechanism repeatedly, amplitude can be gradually reduced.In two outer ring permanent magnet swing process, cause to damp circular ring plate institute in place
The variation for setting magnetic field strength causes induced current-fever-dissipation energy process on damping circular ring plate, and amplitude can be gradually
Reduce, so that the Permanent-magnet bearing is played damping action, reach the good result of radial vibration-reducing, structure is simple, and effectiveness in vibration suppression is steady
Fixed, working environment is good；
(2) when the inner ring permanent magnet of the Permanent-magnet bearing of the invention with damping function is close to outer ring permanent magnet, due to outer ring
Permanent magnet can be moved by repulsion along the direction moved identical with inner ring permanent magnet, so that the bearing provides rigidity
Strong nonlinearity feature is alleviated.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the Permanent-magnet bearing of the invention with damping function；
Fig. 2 is the stagewise cutaway view schematic diagram of Fig. 1；
Arrow represents the direction of magnetization in Fig. 1；
1, shell in figure, 2, bearing block, 3, magnet ring seat, 4, thin squirrel-cage bar, 5, thick squirrel-cage bar, 6, bearing, 7, shaft, 8, interior
Ring permanent magnet, 9, outer ring permanent magnet, 10, damping circular ring plate, 11, helical spring, the 12, first spring cavity, 13, second spring chamber,
14, annulus cover board.
Specific embodiment
Embodiment
As shown in Fig. 1~2, a kind of Permanent-magnet bearing with damping function, including shell 1, bearing block 2, magnet ring seat 3, thin mouse
Cage item 4 and thick squirrel-cage bar 5 are provided with bearing 6 in the bearing block 2, and bearing 6 selects angular contact ball bearing 6, can be directly in city
Purchase, can also be used other types bearing 6, such as dynamic pressure spiral grooved bearing 6, jewel ball bearing 6 etc., the bearing 6 with turn
Axis 7 is fixedly connected, and the magnet ring seat 3 is set on bearing block 2, and fixing sleeve is equipped with and 7 coaxial line of shaft on the bearing block 2
Inner ring permanent magnet 8 is fixedly installed the outer ring permanent magnet 9 opposite with inner ring permanent magnet 8, inner ring permanent magnet 8 in the magnet ring seat 3
It is fixed, the inner ring permanent magnet 8 and the equal axial charging of outer ring permanent magnet 9 and is magnetized by adhesive means with outer ring permanent magnet 9
Direction is identical, and there are two the inner ring permanent magnets 8 and the corresponding setting from top to bottom of outer ring permanent magnet 9, two inner ring
Damping circular ring plate 10 is fixed between permanent magnet 8, the damping circular ring plate 10 is made of exhausted nonmagnetic electrically conductive material, such as exhausted magnetic conductive
Material selection brass, has gapped magnetic field between two outer ring permanent magnets 9, and the edge of the damping circular ring plate 10 is located at magnetic
In the gap of field, the size of the overlapping area at the edge and gapped magnetic field of the damping circular ring plate 10 is with the left and right for damping circular ring plate 10
It vibrates and changes；
The top of the thin squirrel-cage bar 4 is fixedly connected with shell 1, and bottom end is fixedly connected with magnet ring seat 3, the thick mouse cage
The top of item 5 is fixedly connected with shell 1, bottom end is fixedly connected with bearing block 2, in order to improve the stability and vibration damping of structure
Efficiency, the thin squirrel-cage bar 4 are provided with four and are uniformly distributed along the circumferencial direction of magnet ring seat 3, and the thick squirrel-cage bar 5 is provided with
It four and is uniformly distributed along the circumferencial direction of bearing block 2, the quantity of certainly thick squirrel-cage bar 5 is not limited to four, but must be greater than
Three, the thin squirrel-cage bar 4 and thick squirrel-cage bar 5 are made of stainless steel material.
It is arranged between the magnet ring seat 3 and shell 1 and has elastic component, the elastic force direction of the elastic element and inner ring permanent magnetism
Body 8 is consistent with the repulsion direction of outer ring permanent magnet 9.In order to improve the stability of structure and the efficiency of vibration damping, the elastic element
Quantity be four, four elastic elements are uniformly distributed along the circumferencial direction of magnet ring seat 3, certain elastic element and thin mouse cage
The quantity of item 4 is not limited to four, but must be all larger than three, can be determined according to structural parameters, it is ensured that in inner ring permanent magnet
8, under the collective effect of outer ring permanent magnet 9, elastic element and thin squirrel-cage bar 4, magnet ring seat 3 can vibrate freely back and forth.For convenience
Cost is assembled and reduces, the elastic element selects helical spring 11, offers the first spring cavity 12 in the shell 1, described
Second spring chamber 13 is offered on magnet ring seat 3, the both ends of the helical spring 11 are born against in the first spring cavity 12 and second
In spring cavity 13.Helical spring 11, is made of spring steel, which can be customized in specialized factory.
In order to improve the stability that inner ring permanent magnet 8 and outer ring permanent magnet 9 repel each other, effectiveness in vibration suppression and branch of the invention are improved
Stability is held, form air gap between the inner ring permanent magnet 8 and outer ring permanent magnet 9 and is equidistant, two inner ring permanent magnetism
The distance between the distance between body 8 and two outer ring permanent magnets 9 are equal, and the radial direction of the damping circular ring plate 10 has platform
Rank, in-between thickness are greater than the thickness at edge, and two inner ring permanent magnets 8 are fixed in the centre of the damping circular ring plate 10
Between, buffer action, the edge and two outer ring permanent magnets of the damping circular ring plate 10 are played to two inner ring permanent magnets 8
Gap is all had between 9.The inner ring permanent magnet 8 and outer ring permanent magnet 9 are all made of rare earth permanent-magnetic material and are made, and such as use rare earth
Magnetic strong Nd-Fe-B material is made in permanent magnetism material, and trade mark N40, the part can be customized in specialized factory, because of inner ring in work
Permanent magnet 8 and outer ring permanent magnet 9 are only swung without rotation, therefore use integral ring-shaped structure, enhance inner ring permanent magnet 8 and outer ring forever
The magnetism of magnet 9 and the efficiency and stability repelled each other.In order to facilitate the assembly of outer ring permanent magnet 9, the top of the magnet ring seat 3 is opened
Equipped with annular installing port, annulus cover board 14 is detachably provided in the annular installing port.In order to play the work of the guidance magnetic line of force
With the magnet ring seat 3, annulus cover board 14 and bearing block 2 are made of permeability magnetic material, as permeability magnetic material uses No. 45 steel.
Working principle is as follows:
As depicted in figs. 1 and 2,7 amplitude of shaft increases shaft 7, band
2 amplitude of dynamic bearing seat increase, swings 8 disalignment of inner ring permanent magnet on bearing block 2, cause inner ring permanent magnet 8 and outside
9 air gaps of ring permanent magnet be not evenly distributed with, and the small place of air gap will receive a repulsion, and outer ring permanent magnet 9 is pushed to swing, and then are pressed
Helical spring 11 in contracting direction, helical spring 11 can give magnet ring seat 3 one counter-forces, force magnet ring seat 3 and outer ring permanent magnetism
Body 9 moves in the opposite direction, this is a mechanism repeatedly, and amplitude can be gradually reduced.It is put in two outer ring permanent magnets 9
During dynamic, cause the variation for damping 10 position magnetic field strength of circular ring plate, causes induced electricity on damping circular ring plate 10
Stream-fever-dissipation energy process, amplitude can be gradually reduced, and so that the Permanent-magnet bearing 6 is played damping action, reached diameter
To the good result of vibration damping；
In addition, when inner ring permanent magnet 8 is close to outer ring permanent magnet 9, due to outer ring permanent magnet 9 by repulsion can along with it is interior
The direction of the identical movement of ring permanent magnet 8 is mobile, so that the strong nonlinearity feature that the bearing 6 provides rigidity is alleviated.
Claims (9)
1. a kind of Permanent-magnet bearing with damping function, it is characterised in that: including shell (1), bearing block (2), magnet ring seat (3), thin
Squirrel-cage bar (4) and thick squirrel-cage bar (5), the bearing block (2) is interior to be provided with bearing (6), and the bearing (6) and shaft (7) are fixed
Connection, the magnet ring seat (3) are set on bearing block (2), and fixing sleeve is equipped with and shaft (7) coaxial line on the bearing block (2)
Inner ring permanent magnet (8), is fixedly installed the outer ring permanent magnet (9) opposite with inner ring permanent magnet (8) in the magnet ring seat (3),
The inner ring permanent magnet (8) and outer ring permanent magnet (9) axial charging and magnetizing direction is identical, the inner ring permanent magnet (8) and
There are two the corresponding settings from top to bottom of outer ring permanent magnet (9), and damping circle is fixed between two inner ring permanent magnets (8)
Ring plate (10), has gapped magnetic field between two outer ring permanent magnets (9), and the edge of damping circular ring plate (10) is located at magnetic
In the gap of field, the size of the overlapping area at the edge and gapped magnetic field of damping circular ring plate (10) is with damping circular ring plate (10)
Side-to-side vibrations and change；
The top of the thin squirrel-cage bar (4) is fixedly connected with shell (1), and bottom end is fixedly connected with magnet ring seat (3), the thick mouse
The top of cage item (5) is fixedly connected with shell (1), and bottom end is fixedly connected with bearing block (2), the magnet ring seat (3) and shell
(1) setting has elastic component between, the elastic force direction of the elastic element and inner ring permanent magnet (8) and outer ring permanent magnet (9)
It is consistent to repel direction；
The distance between the distance between two described inner ring permanent magnets (8) and two outer ring permanent magnets (9) are equal, described
Damping circular ring plate (10) is made of exhausted nonmagnetic electrically conductive material, and the radial direction of damping circular ring plate (10) has step, among it
Thickness is greater than the thickness at edge, and the centre of damping circular ring plate (10) is fixed between two inner ring permanent magnets (8), institute
It states and all has gap between the edge and two outer ring permanent magnets (9) of damping circular ring plate (10).
2. the Permanent-magnet bearing according to claim 1 with damping function, it is characterised in that: the inner ring permanent magnet (8) and
Outer ring permanent magnet is equidistant between (9).
3. the Permanent-magnet bearing according to claim 1 with damping function, it is characterised in that: the inner ring permanent magnet (8) and
Outer ring permanent magnet (9) is all made of rare earth permanent-magnetic material and is made.
4. the Permanent-magnet bearing according to claim 1 with damping function, it is characterised in that: the elastic element selects spiral
Spring (11), the shell (1) is interior to be offered the first spring cavity (12), offers second spring chamber on the magnet ring seat (3)
(13), the both ends of the helical spring (11) are born against in the first spring cavity (12) and second spring chamber (13).
5. the Permanent-magnet bearing according to claim 1 or 4 with damping function, it is characterised in that: the number of the elastic element
Amount is four, and four elastic elements are uniformly distributed along the circumferencial direction of magnet ring seat (3).
6. the Permanent-magnet bearing according to claim 1 with damping function, it is characterised in that: thin squirrel-cage bar (4) setting
There are four and be uniformly distributed along the circumferencial direction of magnet ring seat (3), the thick squirrel-cage bar (5) is provided with four and along bearing block (2)
Circumferencial direction be uniformly distributed.
7. the Permanent-magnet bearing according to claim 1 or 6 with damping function, it is characterised in that: the thin squirrel-cage bar (4) and
Thick squirrel-cage bar (5) is made of stainless steel material.
8. the Permanent-magnet bearing according to claim 1 with damping function, it is characterised in that: the top of the magnet ring seat (3)
Annular installing port is offered, is detachably provided with annulus cover board (14) in the annular installing port.
9. the Permanent-magnet bearing according to claim 8 with damping function, it is characterised in that: the magnet ring seat (3), circular ring cover
Plate (14) and bearing block (2) are made of permeability magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810282571.7A CN108591256B (en) | 2018-04-02 | 2018-04-02 | Permanent-magnet bearing with damping function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810282571.7A CN108591256B (en) | 2018-04-02 | 2018-04-02 | Permanent-magnet bearing with damping function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591256A CN108591256A (en) | 2018-09-28 |
| CN108591256B true CN108591256B (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810282571.7A Active CN108591256B (en) | 2018-04-02 | 2018-04-02 | Permanent-magnet bearing with damping function |
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| CN (1) | CN108591256B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110652955A (en) * | 2019-11-14 | 2020-01-07 | 帕尼多（徐州）信息科技有限公司 | Hand-held type is gap filler glue gun raw material mixing device for home decoration |
| CN211501371U (en) * | 2019-12-26 | 2020-09-15 | 南京磁谷科技有限公司 | Bearing seat structure for improving damping of magnetic bearing |
| CN112178058B (en) * | 2020-10-30 | 2022-09-30 | 江苏理工学院 | Variable-rigidity radial permanent magnet bearing |
| CN113323960B (en) * | 2021-05-08 | 2022-10-25 | 武汉理工大学 | Elastic support tilting pad magnetic liquid double-floating thrust bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434587A (en) * | 2011-09-19 | 2012-05-02 | 北京航空航天大学 | Permanent-magnetic passive axial magnetic suspension bearing with passive damping effect |
| CN103836080A (en) * | 2012-11-23 | 2014-06-04 | 北京奇峰聚能科技有限公司 | Composite magnetic levitation protective bearing system |
| CN104455143A (en) * | 2014-12-23 | 2015-03-25 | 江苏理工学院 | Magnetic damper with floating magnetic ring |
| CN104455200A (en) * | 2014-12-23 | 2015-03-25 | 江苏理工学院 | Squeeze film damper with floating magnetic ring |
-
2018
- 2018-04-02 CN CN201810282571.7A patent/CN108591256B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434587A (en) * | 2011-09-19 | 2012-05-02 | 北京航空航天大学 | Permanent-magnetic passive axial magnetic suspension bearing with passive damping effect |
| CN103836080A (en) * | 2012-11-23 | 2014-06-04 | 北京奇峰聚能科技有限公司 | Composite magnetic levitation protective bearing system |
| CN104455143A (en) * | 2014-12-23 | 2015-03-25 | 江苏理工学院 | Magnetic damper with floating magnetic ring |
| CN104455200A (en) * | 2014-12-23 | 2015-03-25 | 江苏理工学院 | Squeeze film damper with floating magnetic ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108591256A (en) | 2018-09-28 |
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